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Employee Benefits - Summary of Employee Benefits (Detail) - USD ($)
$ in Thousands
Mar. 31, 2021
Mar. 31, 2020
Disclosure Of Defined Benefit Plans [Abstract]    
Net defined benefit liability $ 5,849 $ 4,834
Other long term employee benefit (liability for compensated absences) 1,630 1,501
Total employee benefit liabilities $ 7,479 $ 6,335